Dust-collector.



F. J. MATGHETTB. DUST COLLECTOR.

APPLICATION FILED 00T. 16, 1904.

1,083,408. A rammed Ja.n.6,1914.

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@m @MMM/MM F. J. MATCHETTE. DUST GOLLEGTOR. LPPLvIoATIoN FILED 00T. 15, 1904.

1,083,408. l Patented .Im1.6,1914.

2 SHEETS-SHEET 2.

(9i/Sgam e b FRANK J. MATCHETTE, or,` iuILvsmUiizzE, WisvoNsIN.

Specification of Letters Ifatent.

era-Gouw@- Ratenieq Jan. o, 191.4.

. f Application led October 15,1904. Serial No. 228,510.

To all lwhom 'it may concern Be it known 'that L'F'RANK J1 MATGHE'ITE, a citizen ofthe United' States, residing at Milwaukee, in the county o f Milwaukeeand State of \Vis'consin,"have nv'ented certain new and useful Improvements in Dust-Collectors, of which'the following is a sp'ecioation,' reference being had to the accompany, ing drawing, 'forming a' part thereof.'

lThis invention relates morepa'rticularly to apparatus in which' dust and dirt are taken up' 'and rem'ved'witlr 'a draftor" current of air produce'd 'by a v'acuiinlor partial vacuum. Its main objects lare to avoid injecting the airv blastby which 'the 'vacuum is produced and maintained into"the' dust laden air, and thus to reduce the volumeof the air from which dust and dirt have'to be Separated Iand the'area of the screen' and the size of the separator required for sucliseparat'io'n;'to eiectively prevent the air escaping from the ejector from making a noise; tof-utilize su'ch escaping air, if desired,'for light'work`,"such as minor cleaningy operatirls, and generally to improve the construction and operation of apparatus of this class.

It consists incertain novel features of con? struction and in 'the' novel arrangement and combinations df 'parts hereinafter particularly described and pointed out in the' claims.

In the1 accompanying drawing like'lfetters designate 'the 'same'` parts' inI the* several figufeaf f l 'Figure l is a vertical longitudinal section of 'apparatus embodying `the invention', and Figs. "2and 3 arehorizon'tal sctionsfof the dust-separator on the lines 2 2 and`3'3 respetively offFig'. 1. f *The apparatus comprises generally a dustseparatorlwhtic'h' InayfV be moved 'from place toplfebut is' stationary relative tother parts'bf 'the apparatus; a portable suction head w'v'hicl'fl hasia iixibl bonnec'tioi"with the separator; and anfejector 'connected with theJ separator and having 'a compressed' air supply connection arranged' tb'fproduee a. draft ofair frorritlie f'suction 'head' 'through the separator. "Thefsepartor consists of an air tight case a, a'dustlpan 'or 'receptacle 'o removably ftt'ed -if thf basf ofthe base; and al' screen' 'c inclosed by the casetover' the 'dustreceptacle a The ase amy-be conveniently made of s'heet "I'netl in 'cylindrical' Yorin; as' shown.

,me provided' @time fo'pwit'h a pipeflb'ow/ d which communicates at its inner end with' toni of' the 'dust-separating harnb'er, by a split-wire 1'ring `f'sprung' into `a"groove in the ring e. "The dustrceptacle 6 is provided'at its upper 'edge 'with a rim g which tsinto a'n annular I'recess in the under side ofthe' rig""e',aid between whichand the top of saidireces'sa rubber" gasket or packing ring 71,4` is'ii'n'terposed. "I't 'i'sal'so provided with a bail or cross-bar z' having a central n'ut for engagement with a".I screw-threaded rod fwhichf'passes downward through the vertical liibiothe'elbotv d'into the separator and'sr've's to 'secure the dust-receptacle in placethereimfandto draw and hold its rim' 'gti htly iagainst'th packing ring h, thereby' orrningan airltightf'joint between said dust-receptacle and the dust-separating chamber. 'The"nut i* has a thread of steep pitch and a"tape1in'g "o eningat its upper end, and" th'rdmj h si a'foo'rresponding thread at'its'lower end 'which 'ispointed t0 facilitate its 'entry `into" said n'ut. At itsl upper 'e'nd said'rod ismrovided with a head l. for screwing it into t e hut i", and it is also formed next to sild' ll'eadwith a screwthr'ead of lesspitch" and"vlv rovided ,with a nut4 "Z having 'a "correspond ng srew-thread and a bearing upon a'proiectin'ofthe elbow fol the' ptrptose offdiwing' the 'rin 'g of the dustreoept'acle 'upward tightly against the packing rin L. 'e'lowthe nut l the' `rod fpassesthrbu'g A a stuffing" box'fform'ed in the elbow' titte prevent le'a'llage of outside air into rth'separator' and' consequentlowering 4 'f A deflecto'wheel in is rotatably mounted on'th'erod jjust' below "th' inner end ofthe elbow d fand is yprovided Ewith wing's or bl'ades n .a1-rah ed tothrow the' dust and dirt carriedI with' 'xe' indoiin'g "air, against "the screen @,thereby tending to'l 'agitate it and this annular chamber a perforated spiral muiier pipe p is contained. with a loose packing of cotton batting, asbestos, or other sound-damping material. The lower end of this tube is closed and the series of small holes extending from one end of the tube to the other are preferably directed toward the inner perforated wall or partition 0, through which the spent and purified air escapes into the space around the dustreceptacle Z), thence downwardly and outwardly through the openings in the base of the case a.

g is a hollow suction head having a slot or aperture of any suitable size and shape for taking up dust and dirt from a carpet or other article to be cleaned. It is provided with a tubular handle 1" which is connected by a rubber hose or iiexible pipe s with the elbow d at the top of the dust-separator, the hose being made of suiicient length to permit the suction head to be moved over any desired area without moving the separator.

An ejector t having a compressed air sup ply passage and connection u, a suction passage o, and a discharge passage w, is attached to the separator' or connected therewith by its suction passage o which communicates lwith thcspace between the case a and the screen c, or on the opposite side of the screen from the dust inlet connection through the elbow d. The suction passage c is provided with a spring-seated check valve which opens outwardly with relation to the dust-separating chamber, and in case of `accidental stoppage of the discharge passage of the ejector, prevents the air blast from entering the separator.

The ejector is provided with anozzle y which is arranged when supplied with compressed air through the passage u, to entrain air through the suctionI passage 'v and discharge it through the passage w, thereby exhausting air from the separator around and through the screen c, and producing a draft from the suction head g and the hose s into the separator. To the lower or discharge end of the ejector is attached a T, one branchk `of which connects with the upper end of the spiral muffler tube p, the other branch e serving for the attachment of a hose or pipe to do light work with the exhaust air when desired. A two-way valve 2 is provided in said T for directing the 'air discharged from the ejector either into the muffler or through the branch a.

The apparatusherein shown and described operates as follows: The supply passage 'u' of the ejector being connected with an air compressor or other source of compressed air, and air being admitted through said connection to the apparatus, a vacuum is formed in the dust-separator,`-thereby pronoeaeos ducing a strong draft through the suction head q into the separator. The head q being moved over a carpet or other article to be cleaned, dust and dirt are taken up with the air and conducted into the separator inside of the screen c, through which the air freed from the dust and dirt passes the dust and dirt dropping into the receptacle b in the base of the separator. The` dust-laden air as it enters the separator strikes the deflector wheel m whose wings n throw the particles of dirt and dust forcibly against the screen, thereby tending to agitate it and to keep its meshes open. The air which passes through the screen is drawn by the ejector through the suction passage o, opening the check valve and is forced through the discharge passage w into one en`d of the mutiier tube p, from which it escapes through the numerous small holes therein without mak ing a disagreeable noise.

The air freed from dust and dirt discharged with considerable force from the ejector, may be utilized for dusting or other light work by attaching a hose or pipe to the branch a and turning the valve 2 to cut out the muffler and to divert the air through said branch.

To empty the dust-receptacle or obtain access to the interior of the separator for cleaning or renewing the screenor for any other purpose, the nut Z is loosened and the rod y' is unscrewed from the nut in the bail z'. The case a is then lifted and removed from the receptacle b and the screen c and other internal parts of the separator are accessible through the opening normally closed by said receptacle.

The screen may be removed for repairs or renewal by withdrawing the rod y', the head lc and nut Z at its upper end being first removed, unscrewing the lower nut on the inner end of the elbow d and removing the spring-wire ring f from the groove in the ring e.

By the construction and arrangement. of parts herein shown and described it will be observed'that the compressed air employed to operate the ejector and to produce a draft through the suction head into the separator is not injected into the dust-laden air, and that consequently the volume of air from which dust and dirt have to be-separated is materially reduced. This is a great advantage since it renders it possible to materially reduce the size and weight of the separator and the area of the screen for removing the dust and dirt from the air -with'which it is taken up and conducted oi' through the suction head. y

With lthe ap aratus as herein shown and described,the an' discharged therefrom after having. done its work in taking up, conducting oli and depositing in the dust-receptacle dust and dirt, may be utilized for dusting, light cleaning or other work that. can be performed by a blast or jet of moderate force. 4

Various modifications in the details of construction and in the arrangement. of parts may be made within the principle and lntended scope of the invention.

I claim:

1. In a dust collector the combination with an air tight case provided with a dust receptacle and withinletYA and -outlet connections, an inverted strainer bag inclosed by said case over said receptacle between the inlet and outlet connectlons of thecase in position to intercept the dust laden air inv its passage from said inlet to said outlet, and a deflector wheel arranged Within said bag in the path of the inflowing dust laden air to throw the dust against the sides of said bag, substantially asl described.

2. In a dust collector the combination of a case provided with inlet and outlet connections and with a removable dust receptacle having an open top, an inverted strainer bag inclosed by said case over said receptacle between said inlet and outlet connections in position to intercept the dust laden air in its passage from said inlet to said outlet, said bag having an open bottom for the discharge of dust through the open top of said dust receptacle into the receptacle, and means for sealing the joint between said dust receptacle and case, substantially as described.

3. In a dust collector the combination of an air-tight case having an inlet and au outlet, a dust receptacle detachably secured in the lower part of said case by a screw rod passing through the top of the case and engaging a nut on said receptacle, a support for said screw rod, a screen inclosed by said case between its inlet and outlet and over said receptacle in position to intercept the dust laden air in its passage from said inlet to said outlet, and air exhausting means connected with the outlet of said case to cause a draft of Vair through said screen, subst-an` tially as described.

4;. The combination of a case having Aair inlet and outlet connections, a removable dust receptacle fitted in the lower part of said case to -form an air tight joint therewith, and a bag or hood-shaped screen inclosed in said case over said receptacle and.v

between said air inlet and outlet connections in position to intercept the dust laden i air in its passage-from said inlet to said outlet, said screen and dust receptacle being connected one with the other at the bottom of the screen and top of the'receptacle, substantially as describe e 5. A dust collector comprising an air tight case provided with an inlet, a perforated walled chamber beneath the air tight case provided with a perforated vserpentine arranged pipe in communication with the air tight case, and a dust intercepting means located in the air tight case intermediate of its inlet and the point of communication between the case and said serpentine pipe to separate the dust from the air and prevent it from 4passing into the serpentine pipe, substantialy as described.

6, A dust collector comprlsing an air tight case provided with an inlet, a perforated walled chamber beneath the air tight case provided with a'perora-ted serpentine pipe in communication with the air tight case, means for creating a down draft of air from the air tight case through the serpentine pipe, and a dust intercepting means located in the air tight case intermediate of its inlet nature in presence of two witnesses.

FRANK J. MATCHETIE.

Witnesses:

CHAs. L. Goss, JOSEPH F. KAMINSKY. 

